[Talk-in] Monuments of India - geographical co-ordinates?
arun.planemad at gmail.com
Wed Aug 29 07:40:59 BST 2012
On Wed, Aug 29, 2012 at 12:02 PM, Onkar Shinde <onkarshinde at gmail.com>wrote:
> On Wed, Aug 29, 2012 at 8:41 AM, Arun Ganesh <arun.planemad at gmail.com>
> > Using OSM is easy once you have the coordinates, but I'm wondering how
> > synced the monument list with the coordinates in the first place. I can
> > assume the list already came with coordinates, but in our case we need to
> > geocode the list which is a bit of a task.
> If I understood the problem correctly you can approach it in following way.
> 1. OSM has a key defined 'wikipedia' which will point to a wikipedia
> article for any node. 
Only, all monuments do not have a wikipedia page. Actually it seems like
only a minuscule portion of them do.
Also, most of the descriptions are generic:
"Two swivel guns belonging to the Mughal Nawwara"
Its quite a task to actually locate them and map it with this information.
This is a massive coordinated mapping project itself. If done, it would be
an awesome database which even the government may not have.
> 2. Tag all the monuments that are already mapped with this tag
> (provided wikipedia page is already present).
> 3. Use XAPI to retrieve all the nodes which have this tag within the
> bbox of India. 
> 4. From this OSM dump you can easily get coordinates using some XML
> Example XAPI query (bbox is small, retrieves one node)
>  http://wiki.openstreetmap.org/wiki/Wikipedia
>  http://wiki.openstreetmap.org/wiki/XAPI#Nodes
> Passion - Some people climb mountains - others write Free software.
> Don't ask why - the reason is the same.
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